The suspended state.

[Siren]

Are we truly unconscious? Or does the self retracts behind the veil and is still conscious without us having access to these memories when the self comes back on this side of the veil?

Very interesting topic.

Our first problematic in grasping this, I believe, is a semantic one.

What is conscious, unconscious and subconscious?

There is only consciousness.

But because of this "veil," consciousness became "split" into what we now refer to as "conscious" and "unconscious." Truth is: the unconscious is not unconscious (not in the sense of being non-conscious)—it is only unconscious to the conscious mind experiencing space/time.

The unconscious is directly related to the metaphysical (or time/space) aspect of reality. Time/space is always the higher/inner, and space/time the lower/outer, no matter where you are standing.

What the "veil" provides is a greater challenge (and hence, reward) in the striving towards the higher/inner; which from the perspective of space/time 3D appears as "uncharted waters" and thus requires a greater excersing of will/faith to "pierce" through the veil to uncover the "unknown."

As for the term subconscious, it could be either used as synonym of unconscious, or it could refer to the "deep mind," the inner/higher consciousness of yourself; more related to the higher/inner/future self and/or the logos.

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From whence have you drawn this concept of a "walk-in"? What you are describing sounds peculiarly like a "possession"...

Well, possession, channeling and the "walk-in" phenomenon are all very similar and closely related, wouldn't you agree?